Electrical device



June 9, 1936. H. B. FUCHS ELECTRICAL DEVICE Fild June 13, 1954 I 5 R 0 M E 6W v m a 9 L 4 7 4 6K 1 3 m 5 7 o l 9 7 3 8 3 7 3 3 In--- I A mwmfluuhuhuuuuhi-.. H 3 7 mwununuunununndnu 2 3 1 f 1 s n w T 6 s L- o 6 W I O O 2 I 3 2 7 8 9 m o 2 2 2 z 2 5 l L s 13 1 A G C 6 K m -F H Patented June 9, 1936 UNITED STATES PATENT OFFICE 13 Claims.

This invention relates to an electrical device for rotating discs, and operating valves, electrical control and varying devices, an radio tuning mechanisms.

The principal object of the invention is to provide an electrical device that'is simple and cheap to construct and easy to operate as compared with prior structures.

Another object of the invention is to provide current controlling means that will actuate an electroresponsive device to move a control device in one direction when the current controlling means is at one condition, and actuate an electroresponsive device to move the control device in another direc ion when the current controlling means is at another condition, the current controlling means being adapted to be actuated by light sensitive devices in circuit therewith, or manually, or by motor actuated means such as a selector drum or disc or timed mechanism.

Further objects of the invention will appear hereinafter.

The invention accordingly consists in the method, system, combinations of elements, arrangement of parts and in the several steps and relation and order of each of the same to one or more of the others, as will be described herein. The many novelfeatures embraced in this invention are far-reaching in their scope and are applicable in many embodimentsother than that described, and I therefore do not wish to be limited except as indicated in the appended claims.

A device embodying the invention is illustrated in the accompanying drawing.

' Referring to the drawing which illustrates one embodiment of my invention used in connection with radio tuning mechanism, I indicates the shaft of a condenser or other varying device upon which is mounted a pulley 2 and a dial 3 having a manual knob 4. It willbe understood that a part of dial 3 may be grooved to form a pulley. 5 indicates a translucent panel, in dial 3, having calibrations 6 which are adapted to be illuminated by light from behind dial 3. I indicates an angle support, secured to a base 8, adapted to support electro-responsive devices such for instance as electro-magnets 9 and ill. An insulating post il, secured to angle support 'I by means of screws 12 and I3, is adapted to support contact element I4 and springs l5 and I6. I! and i8 indicate vibrating armatures secured to spring IS. The ends of spring l5 carry contact points which normally are in contact relation with contact element ll. Associated with armatures l1 and iii are screws i1 and I! which are adapted to hold the ends of a belt l9 such for instance as of metal having a frictional surface of rubber, leather, or fabric. The 5 frictional surface of belt I9 is positioned to engage pulley 2, and belt is is'adjusted to be of such length, by means of screws l1- and/or it, that when armatures I1 and iii are in normal positions belt I! will fit loosely on pulley 2. 10

But when electro-magnet 3 is energized and attracts armature l1, belt l9 secured to armature i'I grips pulley 2 and moves it slightly in the direction toward which armature I1 is attracted, and when electro-magnet I0 is energized and i5 attracts armature l3, belt i9 secured to armature i 8 grirs pulley 2 and moves it slightly in the direction toward which armature I8 is attracted.

It will thus be seen that the intermittent energization of electro-magnet 9 will actuate armature I! to cause belt l9 to move pulley 2 in one direction with a step-by-step movement, and that the intermittent energization of electromagnet ill will actuate armature III to cause belt iii to move pulley 2 in the opposite direction with a step-by-step movement, thereby providing simple and cheap electrical means to move shaft l in either direction.

The purpose of spring i6, which is of nonmagnetic metal such as phosphor-bronze, is to damp the noise caused by the vibration of armatures I1 and I8 against the poles of their respectlve electro-magnets when the electro-magnets are energized by alternating current.

20 and 2| indicate lines from a source of current. 22 indicates a switch member secured to a support 23 which is positioned on a base 24. 25, 23, 21, and 23 indicate contact members adapted to be engaged by switch member 22, and 23 indicates the insulated handleof switch memher 22. The switch member 22 may be of springy material and so adjusted that when at rest it will not touch any contact members, as illustrated in the drawing.

When switch member 22 is actuated to contact with contact member 25, current from line-- 2i passes by way of lines 30, 3|, 32, through support 23, switch member 22, contact member 25, lines 33, 34, 35, 36, through electro-magnet 9, line 3! spring l5, contact element l4, and line 38 to line 20. Electromagnet 3 now being energized attracts armature I! which causes spring i 5 to move away from contact element i4, breaking the circuit through electro-magnet 9, and releasing armature I! so that spring I5 again contacts with contact element I4. This operation is repeated as long as switch member 22 contacts with contact member 25, and the vibration of armature I'I causes belt I 0 to intermittently grip pulley 2 and move it in the direction toward which armature I! is attracted.

39 and 40 indicate lines connected in circuit with a radio set or other device and the current supply connected thereto. 4I and 42 indicate contact members the ends of which terminate within but not at the extremities of the range of shaft I, and 43 indicates a sliding contact secured to dial 3 adapted to slide on and complete the circuit of contact members M and 42. It will thus be seen that when shaft I is not at the extremities of its range the sliding contact 43 will automatically complete the circuit of lines 39 and 40 connected in circuit with the radio set or other device and the current supply connected thereto.

44, 45, 46, and 41 indicate contact members adapted to be engaged by sliding contact 43 at the extremities of the range of shaft I.

At the time switch member 22 is contacting with contact member 25 it also contacts with contact member 26 and the current passes from switch member 22 through contact member 28, lines 48, 49, 50, 5I, 52, 53 and 54 to contact member 45 and by way of line 55 to contact member 44. Contact members 46 and 41 are connected in parallel by means of lines 56, 51 and 58, through line 59 to an indicator, such for instance as a buzzer 60, and through lines SI and 62 to line 20. When shaft I is at an extremity of its range and sliding contact 43 completes the circuit of either contacts 44 and 46 or contacts 45 and 41, the indicator 60 will be actuated, thereby indicating that shaft I has reached an extremity of its range.

It will be understood that the current flowing from lines 20 and 2| is either alternating current or pulsating direct current. Ordinary direct current or battery current may be used if spring I5 is cut in the center so that there is no electrical connection between the two halves thereof, or any other well-known circuit may be used whereby each electromagnet can independently vibrate its respective armature.

But when switch member 22 is actuated to contact with contact member 28, the current from switch member 22 passes through contact member 28, lines 63, 64, 65, electromagnet I0, line 66, spring I5, contact element I4, and line 38 to line 20. Electromagnet I0 now being energized attracts armature I3 which causes spring I5 to move away from contact element I4, breaking the circuit through electromagnet I0, and releas ing armature I8 so that spring I5 again contacts with contact element I4. This operation is re peated as long as switch member 22 contacts with contact member 28, and the vibration of armature I8 causes belt I9 to intermittently grip pulley 2 and move it in the direction toward which armature I8 is attracted, which is opposite to the direction in which armature I'I moves the pulley 2.

At the time switch member 22 is contacting with contact member 28 it also contacts with contact member 21 which is connected in parallel with contact member 26 by means of line 61, so that when sliding contact 43 reaches an extremity of the range of shaft I and completes the circuit of either contacts 44 and 46 or' 45 and 41, the indicator 60 will be actuated the same as if switch member 22 was in contact with contact member 26.

68 indicates a condenser connected across contact element I4 and spring I5 to avoid sparking therebetween when either of electromagnets 9 5 or III is energized.

It will be understood that solenoids may be employed instead of electromagnets '9 and III, to obtain noiseless operation.

In other words, when switch member 22 is biased to one position it will cause one electromagnet to move shaft I in one direction and when switch member 22 is biased to another position it will cause the other electromagnet to move shaft I in the opposite direction, thereby providing simple and easily operated means for moving shaft I in either direction to a desired position, the radio operating current or other circuit is automatically switched on when shaft I is not at the extremities of its range, the radio operat- 20 ing current or other circuit is automatically switched off when shaft I is at an extremity of its range, and when switch member 22 is biased to a position and shaft I is at an extremity of its range a signal will be automatically produced to 25 indicate that shaft I is at an extremity of its range.

It will be readily apparent that shaft I can be operated manually by means of knob 4.

I claim: 30

1. In an electrical device, a rotatable element,

a belt positioned to engage the rotatable element,

a first armature secured to one part of said belt,

a second armature secured to another part of said belt, an electroresponsive device adapted to 35 actuate the first armature to operate the belt to move the rotatable element in one direction, and another electroresponsive device adapted to actuate the second armature to operate the belt to move the rotatable element in another direction.

2. In an electrical device, a rotatable element, a belt positioned to engage the rotatable element, a first armature secured to one end of said belt, a second armature secured to the other end of 45 said belt, an electromagnet adapted to actuate the first armature to operate the belt to move the rotatable element in one direction, and another electromagnet adapted to actuate the second armature to operate the belt to move the rotatable 50 element in an opposite direction.

3. In an electrical device, a rotatable element,

a belt positioned to engage the rotatable element,

a first armature secured to one part of said belt,

a second armature secured to another part of said 55 belt, an electroresponsive device adapted to actuate the first armature to operate the belt to move the rotatable element in one direction, another electroresponsive device adapted to actuate the second armature to operate the belt to move the rotatable element in the opposite direction, and a switch member connected to a source of current adapted to energize either of the said electroresponsive devices to move the rotatable element in either direction.

4. In an electrical device, a rotatable element,

a belt positioned to engage the rotatable element, a first magnetic element secured to one part of said belt, a second magnetic element secured to another part of said belt, an electroresponsive 70 device adapted to actuate the first magnetic element to operate the belt to move the rotatable element in one direction, another electroresponsive device adapted to actuate the second magnctic element to operate the belt to move the 75 rotatable element in another direction, and means for limiting the movement of one magnetic element.

5. In an electrical device, a rotatable element, a belt positioned to engage the rotatable element, a first magnetic element secured to one part of said belt, a second magnetic element secured to another part of said belt, an electroresponsive device adapted to actuate the first magnetic element to operate the belt to move the rotatable element in one direction, another electroresponsive device adapted to actuate the second magnetic element to operate the belt to move the rotatable element in another direction, and means associated with the rotatable element for indicating when the rotatable element is at an extremity of its range.

6. In an electrical device, a manually operable dial, a belt positioned to engage the manually operable dial, a first element secured to one part of said belt, a second element secured to another part of said belt, an electroresponsive device adapted to actuate the first element to operate the belt to move the manually operable dial in one direction, and means for actuating the second element to operate the belt to move the manually operable dial in another direction.

7. In an electrical device, a rotatable element, a support, a vibratable armature secured at one side of said support, another vibratable armature secured at another side of said support, a belt engaging the rotatable element connected to both armatures, an electroresponsive device adapted to actuate one armature to operate the belt to move the rotatable element in one direction, and another electroresponsive device adapted to actuate the other armature to operate the belt to move the rotatable element in another direction.

8. In an electrical device, a rotatable element, a support, a vibratable armature secured at one side of said support, another vibratable armature secured at another side of said support, a belt engaging the rotatable element connected at one part to one armature, an adjustable element on the other armature holding another part of the belt, an electroresponsive device adapted to actuate one armature to operate the belt to move the rotatable element in one direction, and another electroresponsive device adapted to actuate the other armature to operate the belt to move the rotatable element in another direction.

9. In an electrical device, a rotatable element, a. support, a vibratable armature secured at one side of said support, another vibratable armature secured at another side of said support, a belt engaging the rotatable element connected to both armatures, an electroresponsive device adapted to actuate one armature to operate the belt to move the rotatable element in one direction, another electroresponsive device adapted to actuate the other armature to operate the belt to move the rotatable element in another direction, and switching means connected to a source of current adapted to energize either of the electroresponsive devices to move the rotatable element in either direction.

10. In an electrical device, a rotatable element, a support, a vibratable armature secured at one side of said support, another vibratable armature secured at another side of said support, a belt engaging the rotatable element connected to both armatures, an electroresponsive device adapted to actuate one armature to operate the belt to move the rotatable element in one direction, another electroresponsive device adapted to actuate the other armature to operate the belt to move the rotatable element in another direction, and means secured to the rotatable element adapted to indicate when the rotatable element is at an extrem ity of its range.

11. An electrical device comprising a rotatable element, a spring secured to a support, plural armatures secured to said spring, an electroresponsive device adapted to vibrate one armature to move the rotatable element in one direction, and another electroresponsive device adapted to vibrate another armature to move the rotatable element in another direction.

12. In an electrical device, a rotatable element, means for rotating the rotatable element, an ar mature, an electromagnet having a pole adapted to vibrate the armature whereby said armature will actuate the means for rotating to rotate the rotatable element, and a separate non-magnetic spring intermediate the armature and the pole of the electromagnet.

13. In an electrical device, a rotatable element, an armature, an element actuated by the armature adapted to intermittently engage the rotatable element and move it, an electromagnet having a pole adapted to vibrate the armature, and a non-magnetic element positioned intermediate and separated from the armature and the pole of the electromagnet.

HARRY BRICKER FUCHS. 

